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METTL3-dependent m

Shuo Wan1,2,3, Yadong Sun2, Jinbao Zong4

  • 1The First Affiliated Hospital, Jinan University, Guangzhou, 510632, China.

Cell Death & Disease
|June 3, 2023
PubMed
Summary
This summary is machine-generated.

METTL3-dependent m6A methylation is crucial for female fertility. Its deficiency impairs uterine receptivity and decidualization by disrupting estrogen and progesterone signaling, offering insights into infertility causes.

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Area of Science:

  • Reproductive biology
  • Epigenetics
  • Molecular endocrinology

Background:

  • Infertility affects millions globally, with many causes unknown.
  • Epigenetic regulation, including m6A modification, is increasingly recognized in reproduction.
  • The specific role of m6A methylation in female fertility was previously unclear.

Purpose of the Study:

  • To investigate the function of METTL3-dependent m6A methylation in female fertility.
  • To explore the mechanisms by which m6A modification influences reproductive health.
  • To identify potential therapeutic targets for infertility.

Main Methods:

  • Analysis of GEO datasets for METTL3 expression in infertile women.
  • Conditional deletion of Mettl3 in the female reproductive tract of mice (Pgr-Cre driver).
  • m6A-seq analysis of the uterus to identify m6A-modified genes.
  • In vitro experiments with Myc overexpression.

Main Results:

  • METTL3 expression is downregulated in the uteri of infertile women.
  • Mettl3 deletion in mice leads to infertility, impaired uterine receptivity, and decidualization.
  • METTL3 affects the stability of estrogen-responsive genes (e.g., Elf3, Celsr2) and impairs progesterone signaling (PR, Myc).
  • Myc overexpression partially rescues decidualization defects in Mettl3-deficient mice.

Conclusions:

  • METTL3-dependent m6A methylation is essential for female fertility.
  • It balances estrogen and progesterone signaling in the uterine endometrium.
  • This study provides insights into infertility pathogenesis and potential management strategies.